There are 20 zip codes in Niagara County, New York. The most populated is 14094, located in Lockport. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
1409450,302Lockport
1412044,414North Tonawanda
1430428,582Niagara Falls
1430516,605Niagara Falls
1430112,151Niagara Falls
1409210,522Lewiston
141326,689Sanborn
143036,159Niagara Falls
141745,698Youngstown
141085,263Newfane
141315,182Ransomville
141055,128Middleport
140674,028Gasport
141723,091Wilson
140123,020Barker
140081,594Appleton
140281,556Burt
141091,218Niagara University
14126456Olcott
14302206Niagara Falls

Zip Codes in Niagara County, New York by Population (2024)